Analysing Coffee

ETC5513 Assignment 4, Master of Business Analytics

1 Introduction

2 Section 1 - Q1 & 2

3 Section 2 - Q3 & 4 & 7

In Section 3 I want to analyze some interesting content about Arabica coffee beans and Robusta coffee beans.

3.1 Q3. Which top3 countries cultivated most kinds of Arabica coffee beans and Robusta coffee beans respectively?

The Table 3.1 shows that Mexico, Colombia and Guatemala cultivated the most kinds of Arabica coffee beans and India, Uganda and Ecuador cultivated the most kinds of Robusta coffee beans. Also it could find that there are much more types of Arabica coffee beans compared to Robusta coffee beans, which conforms to the content given by Bunn et al. (2015).

Table 3.1: The top3 countries which cultivated most kinds of Arabica coffee beans and Robusta coffee beans respectively

country_of_origin	species	n
Mexico	Arabica	236
Colombia	Arabica	183
Guatemala	Arabica	181
India	Robusta	13
Uganda	Robusta	10
Ecuador	Robusta	2

Now, the Figure 3.1 shows the geographical location of this 6 countries. It could easily find that it seems to be an obvious coffee production zone, which is between the equator and 30 degrees north latitude. In these zones, the annual average temperature and rainfall are in line with the coffee bean growing conditions.

Besides, it indicates that the countries that cultivated Arabica coffee beans are all located in Central and South America, while the countries that cultivated Robusta coffee beans are located in several continents like South America, Eastern Africa and India. It is related to the environment required for the growth of different coffee beans.

Figure 3.1: The geographical location of the top3 countries which cultivated most kinds of Arabica coffee beans and Robusta coffee beans respectively

3.2 Q7. What is the difference of altitude of Arabica coffee beans and Robusta coffee beans production areas?

Figure 3.2 indicates that the mean altitude of Arabica coffee beans production areas is concentrated from 1000 to 1800 meters. Besides, people could surprisingly find that there exists two peaks about the mean altitude of Robusta coffee Beans production areas, and the ranges are concentrated from 500 to 1600 meters and 2800 to 3400 meters respectively. However, the probability of the second peak is much less than the first one.

So it could say that the mean altitude of Arabica coffee beans production areas is higher than that of many Robusta coffee Beans production areas even though there are some exceptions.

Figure 3.2: The mean altitude of Arabica coffee beans and Robusta coffee beans production areas

3.3 Q4. In which species Arabica coffee beans or Robusta coffee beans has higher grades?

Figure 3.3 shows the scores of several primary different aspects of Arabica coffee beans and Robusta coffee beans and their total points. It is obvious that in acidity, aftertaste, aroma and flavor aspects, the median score of Robusta coffee beans is higher than that of Arabica coffee beans, which means Robusta coffee beans have a better performance than Arabica coffee beans. As to sweetness, Arabica coffee beans is much better than Robusta coffee beans. In the end, total point, which combines these primary aspects and some other aspects, shows that Arabica coffee beans has a better quality. Maybe these grades would give some help when people choose coffee beans.

Figure 3.3: Scores of several different aspects of Arabica coffee beans and Robusta coffee beans and their total points

4 Section 3 - Q5 & 6

#Conclusion

Bunn, Christian, Peter Läderach, Oriana Ovalle Rivera, and Dieter Kirschke. 2015. “A Bitter Cup: Climate Change Profile of Global Production of Arabica and Robusta Coffee.” Climatic Change 129 (1): 89–101.